Chapter 23: The Source Sector: Structure Generation

The source (producer) sector is formally defined as the γ-fiber restricted to E₂ carriers, with structure generation as the defining predicate. A carrier satisfies structure generation when its Loop_L factors through Loop_src on the γ channel, producing new material from inorganic precursors. The central theorem identifies the source sector as the unique sector on the γ-fiber that produces structural complexity from simpler inputs, with plants as the biological archetype.